2nd round of clomid


So I am on my second round of clomid. I have PCOS and normally my periods are so irregular. I would have to be on progesterone tablets to start my periods. I took my first round of clomid cd 4-9. Took a ovulation test came back dark positive, tested my progesterone on 21 Doctor said i ovulated and wanted me to stay in clomid bc she said it was working. Did not get pregnant last cycle HOWEVER, this cycle my period came exactly 14days after ovulation without me taking progesterone pills. It has never been on track. Started my second round again this month cd 4-9.... Wanted to see if anyone has experienced this or have any success stories or any advice???